@autism-and-autotune
It's clear to me from this and your "work thread" that there's room for improvement in your "people interaction" skills.
Note that this isn't a criticism - this is true for almost all Aspies - but it's impossible to improve unless you believe there's
room for improvement, that improvement is
possible, and that there's a
tangible benefit from putting in the work.
So you're working in the space between LC and restraining order now, which is a significant step forward.
Next you need to objectively assess your current ability and
later potential to manage your parents' behavior.
This will help with planning.
I suggest it's time for you to learn some personal-interaction techniques with a focus on handling narcissists.
I think a good first step would be to
open a dedicated thread for it here, because (a) even NT's have difficulty with narcs, and (b) there are probably some personal and Aspie-specific aspects for which an Aspie perspective will be helpful.
On a different angle:
You've probably seen the phrase "Revenge is a dish best served cold" many times, with the usual weird "mafia-centric" meaning attributed to it.
I use it because everyone remembers it, but with a different meaning which I suggest you consider, because it's an important part of handling narcs (and other kinds of annoying people too).
So:
If you try to "exact revenge" (or generally, ruthlessly control other people for your benefit, and without consideration for their interests) while you're angry, you will be visible, predictable, and very prone to errors.
If you wait until you're completely calm, you can plan and prepare. Naturally this increases your chances of success, and reduces the chance you'll get caught.
So that's an (indirect) alternative definition of "served cold".
"Work cold" is a very useful principle for dealing with annoying people and/or for getting your way when dominance games become necessary.
I mentioned a simple technique for creating a response to your mother's email the first time we talked about this, but we didn't follow up. There are
simple but useful techniques though.
The point of this:
* There are semi-standard techniques for dealing with narcs ("grey rock" is a set of these)
* There are ways to communicate with difficult people that protect
you (a
necessary objective). You can't
persuade a real narc (because they literally
cannot listen) but you can talk to them without taking any damage yourself.
* Narcs are crazy, which means they have "a target on their back" if you know how to look for it. There's no "one strike win" with narcs, but they can be worn down.
* HFA's can learn to better regulate their emotions.
This is actually something like my comment in your "work thread" (paraphrased) "never
plan to work over 80% capacity, never
actually work over 95%, even if 'the end of the world' has come". That's actually for stress regulation - (IMO) an Aspie should not allow themselves to be controlled by the adrenaline level in their body, because we don't handle it well.
Naturally the same applies when communicating with difficult people. It's much easier to interact with them "cold". and it's always a mistake to get drawn into their craziness.
/lol - this turned into a long post, but I'll add one other thing anyway:
I don't believe in the general applicability of Closure, Validation, and all the other self-therapy terminology that's wormed its way into the vernacular.
You can't achieve mutual closure with a narc. They're
crazy. Nor can you negotiate towards their validating your personal concerns. Narcs don't care, and they
don't know that they don't care. "Negotiation" with them is a stupid dominance/power game that confers no benefit even if you win.
I won't say you
must set aside that stuff while you reconfigure your relationship with your parents, but I
can say with reasonable confidence that it's not going to help at all, and it may well make things more difficult.